From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C255417C7C for ; Sun, 18 Aug 2024 07:05:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723964705; cv=none; b=TDlDzW9aQ4ojXT+V9laDAgyXuxM9LWxrnHMfvoWsvsAh5g5DDodA0UC7/fTbpkhYuZbdKwM3hX3QasXH2i41LHKVzr+snqWBvQdlQc8J4dPtfn/wrISL+rsfxau9jY4avPlqnkjr341m7S8EPf3Y97FB24uRaBmQPliIQkqViQg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723964705; c=relaxed/simple; bh=H/XKGPPa4sk1xnoTIs+5dmtF9w8LaBWYETMI5xcE3ug=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=e58UIQTsSi9sFncfRpWJHGzPvOqgeSbLb4U405+EBM+C3ByFlElvnBgyefavxocReeGVmI+/imgq/NtjY85Sz2bmCn/C5aS/M4TJF6UBOboKlcJbn4AdxIl0cv7OadgTjf5wqVyYc750GD4/oPLVIFDiCd1LhoJrJW7MVKthg3Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f198.google.com with SMTP id e9e14a558f8ab-39d49576404so2566605ab.3 for ; Sun, 18 Aug 2024 00:05:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723964703; x=1724569503; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=AAODbr3KNrQLgKG+w/bPHlAPvZQUfwQo38tYsLIe7pI=; b=ubsOsS8MbyeStNIAtXHIeNCNkP254q0BhJmgclDnTh5GaDtztBHRxWe6YcPVHXWrL0 1xeVQXV+guxR7h+nsOw6HBlZ8AZekU/E/a1TUojuU1VjpNAj8s2rLZsJzFsSnIe++uHD GdwRQ0rS9qjv4Fq4d5mNeAHVyjzVhvwc0sDCVnN4i+z5t+9DQW1hK/tu2WQc1cONhf4b Yq7z7o6DWQ6jDx1VPVZeobIocRbihRzdBnivC9vocynyGKPkCOH4+hgIZMt39v/HWZJo R3Ye3uRac2PnqQr/WFzcTnO6mUFBmNQugDYdwJy7HeKoLJMUs48aO9xQH01sNEvOQpGx blNQ== X-Forwarded-Encrypted: i=1; AJvYcCW2rFjbthJevq5XT4ZgLNFu8vF+YhIaCAD6P65t3BywLZSn2WwgyLnD6WywGIlEpNgs8s0LxDXwfjdQuSFCMU3Fna/9Ez1BGQ== X-Gm-Message-State: AOJu0YwgCR19wMdOGWVuk0EKzvZwRKU5xeRfWwG6d0aK07o+HVyLD2l2 phq0cQsvwym0N0Dj0wZWA2xX/+MGucJ0jx8iwXSNv+sETtSkuSVb7S+P4LcA0vDSXxga8hk37LY gzZFZAOlLSzyttbKbMXHEwlJOLUU1z/Cgt8Bh/u7jRzv7e5BWsurZGD4= X-Google-Smtp-Source: AGHT+IFIf/XAp6OAbWzSaPzmAnzIo5XNj4ClP9Ag5KxvX+Szm8WWVlR9sdtngHyBnGk1odrfmYyO4dPohFlbWPrGwinei1eqLvGH Precedence: bulk X-Mailing-List: cgroups@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c23:b0:381:c14:70cf with SMTP id e9e14a558f8ab-39d26cec1bdmr6913475ab.1.1723964702919; Sun, 18 Aug 2024 00:05:02 -0700 (PDT) Date: Sun, 18 Aug 2024 00:05:02 -0700 In-Reply-To: <000000000000e540f3061fc68863@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b91f33061fefcfbb@google.com> Subject: Re: [syzbot] [cgroups?] possible deadlock in task_rq_lock From: syzbot To: bristot@kernel.org, cgroups@vger.kernel.org, hannes@cmpxchg.org, hdanton@sina.com, juri.lelli@redhat.com, linux-kernel@vger.kernel.org, lizefan.x@bytedance.com, mkoutny@suse.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, tj@kernel.org, vincent.guittot@linaro.org, vineeth@bitbyteword.org Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit 5f6bd380c7bdbe10f7b4e8ddcceed60ce0714c6d Author: Peter Zijlstra Date: Mon May 27 12:06:55 2024 +0000 sched/rt: Remove default bandwidth control bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11a668dd980000 start commit: 367b5c3d53e5 Add linux-next specific files for 20240816 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=13a668dd980000 console output: https://syzkaller.appspot.com/x/log.txt?x=15a668dd980000 kernel config: https://syzkaller.appspot.com/x/.config?x=61ba6f3b22ee5467 dashboard link: https://syzkaller.appspot.com/bug?extid=ca14b36a46a8c541b509 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13d6dbf3980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=142413c5980000 Reported-by: syzbot+ca14b36a46a8c541b509@syzkaller.appspotmail.com Fixes: 5f6bd380c7bd ("sched/rt: Remove default bandwidth control") For information about bisection process see: https://goo.gl/tpsmEJ#bisection